Re: [Xen-devel] Test report: Migration from 4.1 to 4.2 works

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 31.08.12 at 15:01, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> On Fri, 2012-08-31 at 12:30 +0100, Jan Beulich wrote:
>> >>> On 31.08.12 at 13:04, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> wrote:
>> > Migration 4.1 xend -> 4.2 xl
>> >   Needs to be done with xl
>> >   Stop xend on source, which leaves domain running and manipulable by xl
>> >   xl migrate -C /etc/xen/debian.guest.osstest.cfg domain potato-beetle
>> >   Works.
>> 
>> Is that really an acceptable approach? What if you have multiple
>> VMs running, and want to migrate just part of them? All the other
>> would remain unmanageable at least for the duration of the
>> migration(s). (And I also wonder if 4.1's xl is complete/stable
>> enough to recommend such an approach as a general mechanism.)
> 
> The alternative I suppose would be to:
>       * start xend on new host (running 4.2)
>       * migrate the domains you want over to the new system
>       * stop xend on the new host
>       * xl migrate localhost for each domain.

So why is it that xend and xl can't talk to each other for a migration?

Jan


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